.TH UUPDATE 1 "Debian Utilities" "DEBIAN" \" -*- nroff -*-
.SH NAME
uupdate \- upgrade a source code package from an upstream revision
.SH SYNOPSIS
\fBuupdate\fR [\fIoptions\fR] \fInew_upstream_archive\fR [\fIversion\fR]
.br
\fBuupdate\fR [\fIoptions\fR] \fB\-\-find\fR|\fB\-f\fR
.br
\fBuupdate\fR [\fIoptions\fR] \fB\-\-patch\fR|\fB\-p\fR \fIpatch_file\fR
.SH DESCRIPTION
\fBuupdate\fR modifies an existing Debian source code archive to
reflect an upstream update supplied as a patch or from a wholly new
source code archive.  The utility needs to be invoked from the top
directory of the old source code directory, and if a relative name is
given for the new archive or patch file, it will be looked for first
relative to the execution directory and then relative to the parent of
the source tree.  (For example, if the changelog file is
\fI/usr/local/src/foo/foo-1.1/debian/changelog\fR, then the archive or
patch file will be looked for relative to \fI/usr/local/src/foo\fR.)
Note that the patch file or archive cannot be within the source tree
itself.  The full details of what the code does are given below.
.PP
Currently supported source code file types are \fI.tar.gz\fR,
\fI.tar.bz2\fR, \fI.tar.Z\fR, \fI.tgz\fR, \fI.tar\fR, \fI.tar.lzma\fR,
\fI.tar.xz\fR, \fI.7z\fR and \fI.zip\fR
archives.  Also supported are already unpacked source code archives;
simply give the path of the source code directory.  Supported patch
file types are \fBgzip\fR-compressed, \fBbzip2\fR-compressed,
\fBlzma\fR-compressed, \fBxz\fR-compressed and
uncompressed patch files.  The file types are identified by the file
names, so they must use the standard suffixes.
.PP
Usually \fBuupdate\fR will be able to deduce the version number from
the source archive name (as long as it only contains digits and
periods).  If that fails, you need to specify the version number
explicitly (without the Debian release number which will always be
initially \*(lq1\*(rq, or \*(lq0ubuntu1\*(rq on Ubuntu-detected systems).  This can be
done with an initial \fB\-\-upstream-version\fR or \fB\-v\fR option, or
in the case of an archive, with a version number after the filename.
(The reason for the latter is so that \fBuupdate\fR can be called
directly from \fBuscan\fR.)
.PP
Since \fBuupdate\fR uses \fBdebuild\fR to clean the current archive
before trying to apply a patch file, it accepts a \fB\-\-rootcmd\fR or
\fB\-r\fR option allowing the user to specify a gain-root command to be
used.  The default is to use \fBfakeroot\fR.
.PP
If an archive is being built, the pristine upstream source should be
used to create the \fI.orig.tar.gz\fR file wherever possible.  This
means that MD5 sums or other similar methods can be used to easily
compare the upstream source to Debian's copy of the upstream version.
This is the default behaviour, and can be switched off using the
\fB\-\-no\-pristine\fR option below.
.SH OPTIONS
This is a summary of what was explained above.
.TP
\fB\-\-no-conf\fR, \fB\-\-noconf\fR
Do not read any configuration files.  This can only be used as the
first option given on the command-line.
.TP
\fB\-\-upstream\-version \fIversion\fR, \fB\-v \fIversion\fR
Specify the version number of the upstream package explicitly.
.TP
\fB\-\-force\-bad\-version, \fB\-b 
Force a version number to be less than the current one (e.g., when backporting).
.TP
\fB\-\-rootcmd \fIgain-root-command\fR, \fB\-r \fIgain-root-command\fR
Specify the command to be used to become root to build the package and
is passed onto \fBdebuild\fR(1) if it is specified.
.TP
\fB\-\-pristine\fR, \fB\-u\fR
Treat the source as pristine upstream source and symlink to it from
\fI<package>_<version>.orig.tar.gz\fR whenever possible.  This option
has no meaning for patches.  This is the default behaviour.
.TP
\fB\-\-no\-pristine\fR
Do not attempt to make a \fI<package>_<version>.orig.tar.gz\fR symlink.
.TP
\fB\-\-symlink\fR, \fB\-s\fR
Simply create a symlink when moving a new upstream \fI.tar.gz\fR
archive to the new \fI<package>_<version>.orig.tar.gz\fR location.
This is the default behaviour.
.TP
\fB\-\-no\-symlink\fR
Copy the upstream \fI.tar.gz\fR to the new location instead of making
a symlink, if \fI<package>_<version>.orig.tar.gz\fR is missing.  
Otherwise, do nothing.
.TP
.B \-\-find, \fB\-f\fR
Find all upstream tarballs in \fI../\fR which match
\fI<pkg>_<version>.orig.tar.{gz|bz2|lzma|xz}\fR or
\fI<pkg>_<version>.orig\-<component>.tar.{gz|bz2|lzma|xz}\fR ;
\fB\-\-upstream\-version\fR required; pristine source required;
not valid for \fB\-\-patch\fR;
This option uses \fBdpkg\-source\fR as the backend to enable support for the
multiple upstream tarballs and to resolve minor bugs reported previously.  The
use of this option is highly recommended.
.TP
.B \-\-verbose
Give verbose output.
.TP
.BR \-\-help ", " \-h
Display a help message and exit successfully.
.TP
.B \-\-version
Display version and copyright information and exit successfully.
.SH "CONFIGURATION VARIABLES"
The two configuration files \fI/etc/devscripts.conf\fR and
\fI~/.devscripts\fR are sourced in that order to set configuration
variables.  Command line options can be used to override configuration
file settings.  Environment variable settings are ignored for this
purpose.  The currently recognised variables are:
.TP
.B UUPDATE_PRISTINE
If this is set to \fIno\fR, then it is the same as the
\fB\-\-no\-pristine\fR command line parameter being used.
.TP
.B UUPDATE_SYMLINK_ORIG
If this is set to \fIno\fR, then it is the same as the
\fB\-\-no\-symlink\fR command line parameter being used.
.TP
.B UUPDATE_ROOTCMD
This is equivalent to the \fB\-\-rootcmd\fR option.
.SH "ACTIONS TAKEN ON AN ARCHIVE"
.TP
.B Figure out new version number
Unless an explicit version number is provided, the archive name is
analyzed for a sequence of digits separated by dots.  If something
like that is found, it is taken to be the new upstream version
number.  If not, processing is aborted.
.TP
.B Create the .orig.tar.gz archive
If the \fB\-\-pristine\fR or \fB\-u\fR option is specified and the
upstream archive is a \fI.tar.gz\fR or \fI.tgz\fR archive, then this
will be copied directly to \fI<package>_<version>.orig.tar.gz\fR.
.TP
.B Unpacking
The archive is unpacked and placed in a directory with the correct
name according to Debian policy: package-upstream_version.orig.
Processing is aborted if this directory already exists.
.TP
.B Patching
The \fI.diffs.gz\fR from the current version are applied to the
unpackaged archive.  A non-zero exit status and warning message will
occur if the patches did not apply cleanly or if no patch file was
found.  Also, the list of rejected patches will be shown.  The
file \fIdebian/rules\fR is made executable and all of the \fI.orig\fR
files created by \fBpatch\fR are deleted.
.TP
.B Changelog update
A changelog entry with the new version number is generated with the
text \*(lqNew upstream release.\*(rq.

When used on Ubuntu systems, \fBdpkg-vendor\fR detection is used to set
the Debian revision to \*(lq0ubuntu1\*(rq.  You may change
\fIdebian/changelog\fR manually afterwards.
.SH "ACTIONS TAKEN ON A PATCH FILE"
.TP
.B Figure out new version number
Unless an explicit version number is provided, the patch file name is
analyzed for a sequence of digits separated by dots.  If something
like that is found, it is taken to be the new upstream version
number.  If not, processing is aborted.
.TP
.B Clean the current source tree
The command \fBdebuild clean\fR is executed within the current Debian
source archive to clean it.  If a \fB\-r\fR option is given to
\fBuupdate\fR, it is passed on to \fBdebuild\fR.
.TP
.B Patching
The current source archive (\fI.orig.tar.gz\fR) is unpacked and the
patch applied to the original sources.  If this is successful, then
the \fI.orig\fR directory is renamed to reflect the new version number
and the current Debian source directory is copied to a directory with
the new version number, otherwise processing is aborted.  The patch is
then applied to the new copy of the Debian source directory.  The file
\fIdebian/rules\fR is made executable and all of the \fI.orig\fR files
created by \fBpatch\fR are deleted.  If there was a problem with the
patching, a warning is issued and the program will eventually exit
with non-zero exit status.
.TP
.B Changelog update
A changelog entry with the new version number is generated with the
text \*(lqNew upstream release.\*(rq.

When used on Ubuntu systems, \fBdpkg-vendor\fR detection is used to set
the Debian revision to \*(lq0ubuntu1\*(rq.  You may change
\fIdebian/changelog\fR manually afterwards.
.SH "SEE ALSO"
.BR debuild (1),
.BR fakeroot (1),
.BR patch (1),
.BR devscripts.conf (5)

.B The Debian Policy Manual
.SH AUTHOR
The original version of \fBuupdate\fR was written by Christoph Lameter
<clameter@debian.org>.  Several changes and improvements have been
made by Julian Gilbey <jdg@debian.org>.
